Pen-yr-Ole-Wen and the Carneddau Mountains

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Mountain Walks
Aug 06

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Min. 7hrs walk. Approx 17km & c.1,200m ascent

As well as aiming to tick off 3 of the Welsh 3,000`s we'll also hopefully spend some time pondering the architecture, history and geology of the Carneddau as we pass through some of the oldest mountains of Snowdonia.

From the east-end of Llyn (lake!) Ogwen valley, we'll climb, gently at first, but becoming increasingly steadily, up towards glacial cwm below Pen yr Ole Wen's Eastern ridge, along which the ascent becomes steeper still until we reach the first of three summits, (Pen yr Ole Wen 978m); where we'll pause to appreciate the views back to Tryfan and the Glyderau, and maybe Yr Wyddfa (Snowdon!) beyond (assuming the cloud is above us). From here the route is more undulating, dropping a little but with a bit of a steep pull up onto Carnedd Dafydd (1044m), along the top of a prominent edge and then a narrower ridge before for a final slog up onto Carnedd Llewelyn (1064m) from where, weather and progress permitting, we'll ponder how and when the mountain landscape around us was formed. With almost all the uphill behind us, the descent is fairly short and sharp down to Ffynnon Llugwy Reservoir before picking up a tarmacked track back down in to the Ogwen valley, and along a briddleway back to the starting point.

This will be a challenging days walk taking in Wales' highest mountain after Snowdon. We'll cover about 17km (10½miles) with around 1,200m of ascent. Sections of the route are quite poorly defined and boggy, especially at the start, and there are a couple of rock-steps to be tackled; one on the ascent, the other, a slab, to be down climbed (see the last of the photo's above!). Neither are technical or particularly exposed (but a slip wouldn’t end well!) but do require some Hands-on-rock for balance while you stretch your leg muscles a little more than usual! Anyone anxious or in experienced on this type of terrain should carefully consider this before signing up, as neither can be easily avoided!

(All images copyright of Sieh - walk leader.)

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